This is an essay by Tora Råberg from Swedish University of Agricultural Sciences. It presents guidelines how to approach a local ecosystem, taking into account biological, geological, chemical and hydrological assets in order to obtain a sustainable and self-sufficient farming system conserving and increasing local biodiversity. The guidelines are presented both in general theory based on permaculture principles and with a specific case on a newly started ecovillage in Chozas, northwest Spain.http://rapidshare.com/files/194309612/PDIAE.rar


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